Day One Biopharmaceuticals, Inc.
DAWNDelisted Apr 23, 2026- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001845337
Day One Biopharmaceuticals, Inc. was delisted on Apr 23, 2026; its insiders filed their last Form 4 on Apr 27, 2026; 208 institutions reported holding it in 13F filings for Q1 2026, worth $1.85B in total; Soros Fund Management was the only superinvestor holding it.
13F holders, Q3 2025
Institutional positions in Day One Biopharmaceuticals, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 173
- +1 vs. Q2 2025
- Shares held
- 85.6M
- −543.9K (−0.6%) vs. Q2 2025
- Total value
- $603.5M
- +$43.5M (+7.8%) vs. Q2 2025
- New holders
- 33
- 54 more added
- Sold out
- 32
- 61 more reduced
2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting DAWN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1 | $3.55K |
| Q1 2026 | 208 | $1.85B |
| Q4 2025 | 184 | $758.4M |
| Q3 2025 | 173 | $603.5M |
| Q2 2025 | 174 | $561.1M |
| Q1 2025 | 184 | $747.1M |
| Q4 2024 | 164 | $1.19B |
| Q3 2024 | 166 | $1.28B |
| Q2 2024 | 157 | $1.03B |
| Q1 2024 | 148 | $1.20B |
| Q4 2023 | 139 | $1.12B |
| Q3 2023 | 130 | $951.5M |
| Q2 2023 | 140 | $941.0M |
| Q1 2023 | 126 | $818.1M |
| Q4 2022 | 109 | $1.29B |
| Q3 2022 | 93 | $1.21B |
| Q2 2022 | 87 | $1.06B |
| Q1 2022 | 66 | $429.6M |
| Q4 2021 | 58 | $698.3M |
| Q3 2021 | 45 | $452.9M |
| Q2 2021 | 33 | $401.1M |
| Q1 2021 | 0 | $0 |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Day One Biopharmaceuticals, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 10,097,668 | $71.2M | 0.00% | −1,245,031−11.0% | Reduced |
| BlackRock, Inc. | 9,001,455 | $63.5M | 0.00% | −828,976−8.4% | Reduced |
| Atlas Venture Life Science Advisors, LLC | 6,430,257 | $45.3M | 6.02% | 00.0% | Unchanged |
| Vanguard Group Inc | 6,181,329 | $43.6M | 0.00% | +4,834+0.1% | Added |
| Deerfield Management Company, L.P. (Series C) | 4,705,413 | $33.2M | 0.51% | +982,282+26.4% | Added |
| Franklin Resources Inc | 3,477,026 | $24.5M | 0.01% | −620,599−15.1% | Reduced |
| Rubric Capital Management LP | 3,377,071 | $23.8M | 0.32% | +3,377,071 | New |
| State Street Corp | 3,240,444 | $22.8M | 0.00% | +550,758+20.5% | Added |
| Vestal Point Capital, LP | 2,675,000 | $18.9M | 0.86% | −325,000−10.8% | Reduced |
| Pictet Asset Management Holding SA | 2,373,133 | $16.7M | 0.02% | −1,349,599−36.3% | Reduced |
| Alyeska Investment Group, L.P. | 2,212,187 | $15.6M | 0.05% | −800,000−26.6% | Reduced |
| Braidwell LP | 2,181,598 | $15.4M | 0.46% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,761,264 | $12.4M | 0.00% | +48,835+2.9% | Added |
| AIGH Capital Management LLC | 1,520,492 | $10.7M | 3.75% | +1,520,492 | New |
| Mak Capital One LLC | 1,448,461 | $10.2M | 2.04% | +1,448,461 | New |
| Balyasny Asset Management LLC | 1,384,047 | $9.76M | 0.02% | +1,384,047 | New |
| Goldman Sachs Group Inc | 1,371,437 | $9.67M | 0.00% | −319,849−18.9% | Reduced |
| Hudson Bay Capital Management LP | 1,320,000 | $9.31M | 0.06% | +23,300+1.8% | Added |
| Algert Global LLC | 1,317,042 | $9.29M | 0.16% | +411,000+45.4% | Added |
| Morgan Stanley | 1,304,029 | $9.19M | 0.00% | −49,119−3.6% | Reduced |
| Dimensional Fund Advisors LP | 1,223,284 | $8.62M | 0.00% | −193,269−13.6% | Reduced |
| Bank of America Corp | 1,191,851 | $8.40M | 0.00% | +226,428+23.5% | Added |
| Qube Research & Technologies Ltd | 1,167,669 | $8.23M | 0.01% | +223,467+23.7% | Added |
| DAFNA Capital Management LLC | 999,163 | $7.04M | 1.74% | +120,000+13.6% | Added |
| Renaissance Technologies LLC | 905,476 | $6.38M | 0.01% | −95,064−9.5% | Reduced |
| Millennium Management LLC | 693,320 | $4.89M | 0.00% | −514,482−42.6% | Reduced |
| Citadel Advisors LLC | 663,213 | $4.68M | 0.00% | −40,431−5.7% | Reduced |
| Stonepine Capital Management, LLC | 647,382 | $4.56M | 3.71% | +197,382+43.9% | Added |
| Northern Trust Corp | 629,592 | $4.44M | 0.00% | +18,431+3.0% | Added |
| Charles Schwab Investment Management Inc | 610,064 | $4.30M | 0.00% | +31,301+5.4% | Added |
| J. Goldman & Co LP | 569,619 | $4.02M | 0.15% | +12,139+2.2% | Added |
| Kennedy Capital Management, Inc. | 540,384 | $3.81M | 0.08% | +86,864+19.2% | Added |
| Barclays PLC | 347,185 | $2.45M | 0.00% | −924−0.3% | Reduced |
| HRT Financial LP | 321,377 | $2.27M | 0.01% | +321,377 | New |
| Bank of New York Mellon Corp | 306,180 | $2.16M | 0.00% | −1,673−0.5% | Reduced |
| Pale Fire Capital SE | 302,467 | $2.13M | 0.23% | +267,624+768.1% | Added |
| Parkman Healthcare Partners LLC | 301,746 | $2.13M | 0.23% | −198,254−39.7% | Reduced |
| Jane Street Group, LLC | 279,344 | $1.97M | 0.00% | +279,344 | New |
| Parkwood LLC | 275,000 | $1.94M | 0.19% | 00.0% | Unchanged |
| Jump Financial, LLC | 272,547 | $1.92M | 0.02% | +272,547 | New |
| BNP Paribas Arbitrage, SA | 268,288 | $1.89M | 0.00% | +142,826+113.8% | Added |
| Schroder Investment Management Group | 270,217 | $1.89M | 0.00% | +90,084+50.0% | Added |
| Trexquant Investment LP | 266,580 | $1.88M | 0.02% | +151,153+131.0% | Added |
| Fisher Asset Management, LLC | 220,163 | $1.55M | 0.00% | −1,820−0.8% | Reduced |
| UBS Group AG | 209,717 | $1.48M | 0.00% | +120,242+134.4% | Added |
| Quest Partners LLC | 185,006 | $1.30M | 0.09% | +169,134+1,065.6% | Added |
| Sphera Funds Management Ltd. | 175,371 | $1.24M | 0.29% | 00.0% | Unchanged |
| Nuveen, LLC | 150,372 | $1.06M | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 150,349 | $1.06M | 0.00% | +6,896+4.8% | Added |
| National Philanthropic Trust | 150,000 | $1.06M | 0.01% | 00.0% | Unchanged |
| Susquehanna Fundamental Investments, LLC | 138,420 | $975.9K | 0.04% | −124,893−47.4% | Reduced |
| Knott David M Jr | 130,500 | $920.0K | 0.39% | +96,786+287.1% | Added |
| Rafferty Asset Management, LLC | 127,580 | $899.4K | 0.00% | +28,889+29.3% | Added |
| Swiss National Bank | 125,800 | $886.9K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 121,945 | $859.7K | 0.00% | +5,885+5.1% | Added |
| UBS Asset Management Americas Inc | 116,245 | $819.5K | 0.00% | −59,171−33.7% | Reduced |
| Macquarie Group Ltd | 110,000 | $776.0K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 109,781 | $771.8K | 0.00% | −21,887−16.6% | Reduced |
| AQR Capital Management LLC | 108,477 | $764.8K | 0.00% | −171,373−61.2% | Reduced |
| Los Angeles Capital Management LLC | 98,889 | $697.2K | 0.00% | +16,632+20.2% | Added |
| Invesco Ltd. | 98,042 | $691.2K | 0.00% | +29,535+43.1% | Added |
| Hennion & Walsh Asset Management, Inc. | 95,072 | $670.3K | 0.02% | −1,749−1.8% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 92,555 | $652.5K | 0.01% | +92,555 | New |
| Man Group plc | 91,818 | $647.3K | 0.00% | +34,956+61.5% | Added |
| Dynamic Technology Lab Private Ltd | 87,541 | $618.0K | 0.10% | +4,318+5.2% | Added |
| Perkins Capital Management Inc | 82,250 | $579.9K | 0.51% | +82,250 | New |
| Wells Fargo & Company | 81,468 | $574.4K | 0.00% | +8,901+12.3% | Added |
| Price T Rowe Associates Inc | 79,733 | $563.0K | 0.00% | −1,040,898−92.9% | Reduced |
| XTX Topco Ltd | 78,848 | $555.9K | 0.03% | +54,580+224.9% | Added |
| D. E. Shaw & Co., Inc. | 77,972 | $549.7K | 0.00% | −3,331−4.1% | Reduced |
| California State Teachers Retirement System | 71,894 | $506.9K | 0.00% | +15,774+28.1% | Added |
| Alliancebernstein L.P. | 67,790 | $477.9K | 0.00% | 00.0% | Unchanged |
| Virtus Investment Advisers, Inc. | 66,427 | $468.3K | 0.13% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 65,682 | $463.1K | 0.00% | −23,420−26.3% | Reduced |
| ExodusPoint Capital Management, LP | 60,921 | $429.5K | 0.01% | −259,296−81.0% | Reduced |
| Legal & General Group Plc | 56,864 | $400.9K | 0.00% | 00.0% | Unchanged |
| Erste Asset Management GmbH | 51,200 | $357.9K | 0.00% | 00.0% | Unchanged |
| Catalytic Wealth RIA, LLC | 50,000 | $352.5K | 0.01% | −30,000−37.5% | Reduced |
| Tudor Investment Corp Et Al | 49,550 | $349.3K | 0.00% | +13,157+36.2% | Added |
| Alps Advisors Inc | 49,035 | $345.7K | 0.00% | −5,673−10.4% | Reduced |
| Royal Bank of Canada | 43,999 | $310.0K | 0.00% | −130,975−74.9% | Reduced |
| PharVision Advisers, LLC | 42,345 | $298.5K | 0.17% | +42,345 | New |
| Lion Point Capital, LP | 42,000 | $296.1K | 1.68% | +42,000 | New |
| Deutsche Bank AG | 41,504 | $292.6K | 0.00% | −283,784−87.2% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 40,278 | $283.6K | 0.00% | −3,966−9.0% | Reduced |
| Cetera Investment Advisers | 39,550 | $278.8K | 0.00% | +15,850+66.9% | Added |
| Diametric Capital, LP | 38,465 | $271.2K | 0.10% | −11,476−23.0% | Reduced |
| Oxford Asset Management LLP | 38,463 | $271.2K | 0.09% | +38,463 | New |
| MetLife Investment Management | 37,478 | $264.2K | 0.00% | −6,964−15.7% | Reduced |
| Advisor Group Holdings, Inc. | 37,295 | $260.7K | 0.00% | +4,414+13.4% | Added |
| American Century Companies Inc | 33,865 | $238.7K | 0.00% | +6,535+23.9% | Added |
| Martingale Asset Management L P | 33,700 | $237.6K | 0.01% | −1,300−3.7% | Reduced |
| DRW Securities, LLC | 33,265 | $232.7K | 0.01% | −24,539−42.5% | Reduced |
| Intech Investment Management LLC | 31,268 | $220.4K | 0.00% | −14,129−31.1% | Reduced |
| Susquehanna International Group, LLP | 28,854 | $203.4K | 0.00% | −71,648−71.3% | Reduced |
| ADAR1 Capital Management, LLC | 28,023 | $197.6K | 0.02% | 00.0% | Unchanged |
| Profund Advisors LLC | 27,635 | $194.8K | 0.01% | +6,685+31.9% | Added |
| State of Wisconsin Investment Board | 26,992 | $190.3K | 0.00% | −109,284−80.2% | Reduced |
| SG Americas Securities, LLC | 26,345 | $186.0K | 0.00% | +26,345 | New |
| Creative Planning | 26,196 | $184.7K | 0.00% | +7,689+41.5% | Added |